266610c5ed5730f8edfb956abc8138aa689ac7bc2e511787557d148c77a76c35

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 10:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe
Size

31KB
MD5

d4a2986e5e235e53e508854e36fea4a3
SHA1

db966ad389375a1e7e30b8776fe0450e8850d33a
SHA256

266610c5ed5730f8edfb956abc8138aa689ac7bc2e511787557d148c77a76c35
SHA512

47d790505feb043f7c170deef42047fff83fa35f70a3150387fecf80b246771ed77a7f8cdee89a7cb868480835c787deeb424b2c5b6810cb8cc9086d8bdd4704
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9R0aOX:b7o/2n1TCraU6GD1a4Xt9R0aOX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231f7-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4740	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 4740	4692	2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe	85
PID 4692 wrote to memory of 4740	4692	2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe	85
PID 4692 wrote to memory of 4740	4692	2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_d4a2986e5e235e53e508854e36fea4a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
31KB

MD5
bbe35e96666a8945840481a65cd7a03d

SHA1
be9367fd255f050dd00a229ac91c9a58e85cc5fe

SHA256
547c153fc900d5a050805ef5ce24dd5944514eb4366383d94869945b6844052b

SHA512
b79b73be32ae71e5b999a2847cbdca1e8ad2ca8a0f923d00679e6c5ae17d6590c07251332bfa03c0c7909d1cb06e9729516e283c69230933f249b9ff31d43bc2

Download Submit
memory/4692-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4692-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4692-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4740-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download